You start with what you consider to be a rhetorical question: does nobody receive decent care or is the real problem that many people don't have health insurance? I suggest a much better question: Why is health insurance in this country SO COSTLY that we can not afford to provide coverage for a sixth of our population?

The chart at the bottom of the story makes it obvious that this is a clear statement of the problem:

Healthcare compared

Health spending as a share of GDP
US 16%
UK 8.4%

Health spending per head
US $7,290
UK $2,992

Another figure from the article speaks to your musings about the relative virtues of corporate bureaucracies versus government bureaucracies in providing low cost health care:

Public spending on healthcare (% of total spending on healthcare)
US 45%
UK 82%

Finally, the rest of the chart deals with broad comparisons of the quality of that health care:

Practising physicians (per 1,000 people)
US 2.4
UK 2.5

Nurses (per 1,000 people)
US 10.6
UK 10.0

Acute care hospital beds (per 1,000 people)
US 2.7
UK 2.6

Life expectancy:
US 78
UK 80

Infant mortality (per 1,000 live births)
US 6.7
UK 4.8